The Swedish Varve Chronology is an unparalleled tool for linking the deglacial history of Sweden with associated palaeo‐environmental change at an annual time scale, and it forms part of Sweden's cultural heritage. A full deglacial chronology connected to the present day does not yet exist; a notable gap is in southeasternmost Sweden, where few varved records are successfully connected to reconstruct ice‐margin retreat. Deglaciation in southern Sweden covers both the climate transition to the Bølling warm period (~14.7 ka BP) and the ice‐margin transition from a subaqueous to terrestrial terminus. To facilitate investigations into the links between ice‐margin dynamics and abrupt climate change, we revisited the varve chronologies of southern Sweden. We digitized unpublished records, reanalysed existing varve thickness records, and obtained and analysed new varve series both on land and offshore. This combined approach has enabled us to refine and extend the existing south coast chronology east and 78 km northwards. Our new Skåne‐Småland chronology records 725 years of deglaciation, in addition to a younger floating chronology in parts. This chronology suggests that the glacial‐lake terminating Fennoscandian Ice Sheet in southern Sweden initially retreated northwards at ~110–160 m a⁻¹ slowing to 60–70 m a⁻¹ near the palaeo‐shoreline. Between today's mainland and the (now) island of Öland the retreat rates increase three‐ to fivefold. Ice‐margin retreat was initially oriented towards the north (as along the south coast), but later pivoted towards the northwest, signifying a landward retreat of terrestrial ‘Swedish’ ice that became divorced from the Baltic Sea ice‐sheet catchment. Our new 725‐year‐long varve thickness series reveals repeated multidecadal scale episodes of increased sedimentation. These likely signify phases of enhanced ice‐sheet melting that repeat and persist throughout the deglaciation of Skåne‐Småland.

中文翻译：

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瑞典东南部725年的综合海上陆表年代学建议快速撤冰〜15 ka BP

瑞典Varve年表是一种无与伦比的工具，可以将瑞典的冰河历史与相关的古环境变化联系在一起，并且是瑞典文化遗产的一部分。至今还没有完整的冰河年代史。瑞典最东南部是一个明显的空白，那里很少有脉状记录成功地与重建冰缘撤退有关。瑞典南部的冰川融化既包括向伯灵暖期的气候过渡（〜14.7 ka BP），也包括从水下端到陆地终点的冰缘过渡。为了便于调查冰缘动态与突然的气候变化之间的联系，我们重新审视了瑞典南部的varve年表。我们将未发布的记录数字化，重新分析了现有的瓣膜厚度记录，并获得并分析了陆上和海上的新阀门系列。这种结合的方法使我们能够完善和扩展现有的南海岸向东和向北78公里的年代。我们的全新Skåne‐Småland年表记录了725年的冰消冰雪，此外还有更年轻的部分漂浮年表。从年代学的角度来看，瑞典南部的冰川湖终结的芬诺斯堪的亚冰盖最初是向北退缩的，速度约为110-160 m a。^-1在古海岸线附近减慢至60–70 m a ^-1。在今天的大陆和厄兰岛（现在）之间，撤退率增加了三到五倍。冰缘退缩最初是向北（如沿着南海岸），但后来又向西北倾斜，这意味着陆生“瑞典”冰的退缩已与波罗的海冰盖集水区分开。我们新的长达725年的瓣膜厚度系列揭示了沉积物不断重复的多年代尺度事件。这些可能表示冰盖融化增强的阶段，在斯科讷-斯莫兰（Skåne-Småland）的整个冰消过程中重复并持续存在。